ModMirror

Find enforcement drift before your users do.

ModMirror is a Reddit Devvit moderation app that helps mod teams enforce rules consistently.

It scans recent moderation patterns, identifies enforcement drift, helps teams agree on rule policies, and gives moderators live consistency nudges when handling posts or comments.

Hackathon

Built for the Reddit Mod Tools and Migrated Apps Hackathon.

Category: Best New Mod Tool

Product Thesis

Most moderation tools help moderators act faster.

ModMirror helps moderator teams act consistently.

MVP

• Mirror Scan
• Policy Agreement Flow
• Apply Policy Action
• Consistency Nudge + Override Audit
• Governance Core
• Demo seed mode

Development Status

Operational overhaul W00-W14, Expansion W16-W34, and the post-W34 runtime proof follow-up are merged on master.

Current master passed npm run deploy on May 21, 2026 and uploaded Devvit app version 0.0.2 with WebView capability. Treat that as deploy/upload readiness, not route-level proof for every WebView API path.

The app opens with a compact Reddit inline launch card and can expand into Reddit's native WebView modal. The dashboard is now organized around moderator jobs: Act, Scan, Agree, Review, Prove, and Settings.

Implemented product surfaces include target-aware Apply Policy preview, explicit confirmation and log-only fallback, immutable action receipts, Mirror Scan history, deep scan depth controls, drift-over-time analytics, policy proposal/review/adoption, receipt-backed Case Packets, manual Markdown Digest, disabled-by-default AI advisory, preview-first team delivery, and a runtime verification matrix.

W13 runtime proof verified the subreddit dashboard launcher and the operational IA in the desktop expanded WebView on r/modmirror_dev playtest v0.0.1.71. Post-W34 runtime proof advanced the safe desktop Reddit WebView paths through playtest v0.0.1.120: safe Redis and Reddit read smokes, post/comment Apply Policy menu target capture, log-only receipt persistence, receipt-backed Evidence Boards and Case Packets, Incident Mode receipt tagging, config import / export, privacy dry-run controls, response preview receipts, and UI alignment in fullscreen.

Native Reddit mobile behavior, real Reddit moderation execution, actual retention deletion, Mod Discussion delivery, scheduler behavior, native Mod Notes, live modqueue reads, non-mod access checks, and external AI calls remain disabled or unverified until dedicated runtime proof exists.

Before public publishing, app details page terms and privacy links still need to be set outside the local CLI flow.

Local Commands

• npm install
• npm run type-check
• npm run lint
• npm run build
• npm test
• npm run dev

See:

• AGENTS.md
• PLAN.md
• TODO.md
• RESEARCH.md
• docs/PRODUCT.md